The first truly long-range, wide-field zoom eyepiece for any spotting scope: 3.75x. 15-56x on the DiaScope 65 FLs and 20-75x on the 85 FLs. Vario eyepieces ensure that even the smallest detail is seen in fascinating clarity. Locking bayonet mount allows for quick attachment to any ZEISS DiaScope. (Locking available only on the new DiaScopes.)